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A1 practical: Measuring g (card drop)

In this practical the acceleration due to gravity will be measured by dropping a strip of card through a photo gate.When the card of length L is dropped it accelerates downwards. The photo gate is used to measure the time taken for the card to mass through the gate, this means that it has travelled a distance L.If the acceleration is uniform then we can use the equation s = ut + ½at2

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